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Staal J, Driege Y, Van Gaever F, Steels J, Beyaert R. Chimeric and mutant CARD9 constructs enable analyses of conserved and diverged autoinhibition mechanisms in the CARD-CC protein family. FEBS J 2024; 291:1220-1245. [PMID: 38098267 DOI: 10.1111/febs.17035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 11/09/2023] [Accepted: 12/13/2023] [Indexed: 12/27/2023]
Abstract
Caspase recruitment domain-containing protein (CARD)9, CARD10, CARD11, and CARD14 all belong to the CARD-coiled coil (CC) protein family and originated from a single common ancestral protein early in vertebrate evolution. All four proteins form CARD-CC/BCL10/MALT1 (CBM) complexes leading to nuclear factor-kappa-B (NF-κB) activation after upstream phosphorylation by various protein kinase C (PKC) isoforms. CBM complex signaling is critical for innate and adaptive immunity, but aberrant activation can cause autoimmune or autoinflammatory diseases, or be oncogenic. CARD9 shows a superior auto-inhibition compared with other CARD-CC family proteins, with very low spontaneous activity when overexpressed in HEK293T cells. In contrast, the poor auto-inhibition of other CARD-CC family proteins, especially CARD10 (CARMA3) and CARD14 (CARMA2), is hampering characterization of upstream activators or activating mutations in overexpression studies. We grafted different domains from CARD10, 11, and 14 on CARD9 to generate chimeric CARD9 backbones for functional characterization of activating mutants using NF-κB reporter gene activation in HEK293T cells as readout. CARD11 (CARMA1) activity was not further reduced by grafting on CARD9 backbones. The chimeric CARD9 approach was subsequently validated by using several known disease-associated mutations in CARD10 and CARD14, and additional screening allowed us to identify several previously unknown activating natural variants in human CARD9 and CARD10. Using Genebass as a resource of exome-based disease association statistics, we found that activated alleles of CARD9 correlate with irritable bowel syndrome (IBS), constipation, osteoarthritis, fibromyalgia, insomnia, anxiety, and depression, which can occur as comorbidities.
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Affiliation(s)
- Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
- Department of Biochemistry and Microbiology, Ghent University, Belgium
| | - Yasmine Driege
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Femke Van Gaever
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Jill Steels
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, Belgium
- Department of Biomedical Molecular Biology, Ghent University, Belgium
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Krysko O, Korsakova D, Teufelberger A, De Meyer A, Steels J, De Ruyck N, van Ovost J, Van Nevel S, Holtappels G, Coppieters F, Ivanchenko M, Braun H, Vedunova M, Krysko DV, Bachert C. Differential protease content of mast cells and the processing of IL-33 in Alternaria alternata induced allergic airway inflammation in mice. Front Immunol 2023; 14:1040493. [PMID: 37153601 PMCID: PMC10154570 DOI: 10.3389/fimmu.2023.1040493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 03/27/2023] [Indexed: 05/09/2023] Open
Abstract
Background Recent in vitro studies strongly implicated mast cell-derived proteases as regulators of IL-33 activity by enzymatic cleavage in its central domain. A better understanding of the role of mast cell proteases on IL-33 activity in vivo is needed. We aimed to compare the expression of mast cell proteases in C57BL/6 and BALB/c mice, their role in the cleavage of IL-33 cytokine, and their contribution to allergic airway inflammation. Results In vitro, full-length IL-33 protein was efficiently degraded by mast cell supernatants of BALB/c mice in contrast to the mast cell supernatants from C57BL/6 mice. RNAseq analysis indicated major differences in the gene expression profiles of bone marrow-derived mast cells from C57BL/6 and BALB/c mice. In Alternaria alternata (Alt) - treated C57BL/6 mice the full-length form of IL-33 was mainly present, while in BALB/c mice, the processed shorter form of IL-33 was more prominent. The observed cleavage pattern of IL-33 was associated with a nearly complete lack of mast cells and their proteases in the lungs of C57BL/6 mice. While most inflammatory cells were similarly increased in Alt-treated C57BL/6 and BALB/c mice, C57BL/6 mice had significantly more eosinophils in the bronchoalveolar lavage fluid and IL-5 protein levels in their lungs than BALB/c mice. Conclusion Our study demonstrates that lung mast cells differ in number and protease content between the two tested mouse strains and could affect the processing of IL-33 and inflammatory outcome of Alt -induced airway inflammation. We suggest that mast cells and their proteases play a regulatory role in IL-33-induced lung inflammation by limiting its proinflammatory effect via the IL-33/ST2 signaling pathway.
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Affiliation(s)
- Olga Krysko
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
- *Correspondence: Olga Krysko,
| | - Darya Korsakova
- Institute of Biology and Biomedicine, National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Andrea Teufelberger
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
- Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria
| | - Amse De Meyer
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| | - Jill Steels
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| | - Natalie De Ruyck
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| | - Judith van Ovost
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| | - Sharon Van Nevel
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| | - Gabriele Holtappels
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| | - Frauke Coppieters
- Center for Medical Genetics Ghent (CMGG), Department of Biomolecular Medicine, Ghent University, Ghent, Belgium
| | - Mikhail Ivanchenko
- Institute of Information Technology, Mathematics and Mechanics, National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Harald Braun
- Unit for Structural Biology, VIB-UGent Center for Inflammation Research, Ghent University, Ghent, Belgium
- Unit for Structural Biology, Department of Biochemistry and Microbiology, Ghent University, Ghent, Belgium
| | - Maria Vedunova
- Institute of Biology and Biomedicine, National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Dmitri V. Krysko
- Cell Death Investigation and Therapy Laboratory, Department of Human Structure and Repair, Ghent University, Ghent, Belgium
- Department of Pathophysiology, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Claus Bachert
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
- Department of Otorhinolaryngology - Head and Neck Surgery, University Hospital of Münster, Münster, Germany
- First Affiliated Hospital, Sun Yat-Sen University, International Airway Research Center, Guangzhou, China
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